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National Stock Number: 4820-00-992-0621
Federal Supply Class: 4820
National Item Identification Number: 009920621
Description: SEAT,VALVE
Detail: A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
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Manufacturer Information:
668J901PC95 | 79500 | WESTINGHOUSE ELECTRIC CORP | 935B111-2 | 79500 | WESTINGHOUSE ELECTRIC CORP | 935B111-2 | 88657 | WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV | 935B111-2 | 90099 | NORTHROP GRUMMAN SYSTEMS CORPORATION | 935B111PC2 | 79500 | WESTINGHOUSE ELECTRIC CORP | 935B111PC2 | 90099 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
FLANGE DIAMETER | 4.042 INCHES MINIMUM AND 4.052 INCHES MAXIMUM | FSC APPLICATION DATA | TURBINE,STEAM | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE BODY | MATERIAL | COBALT ALLOY SEAT | MATERIAL | STEEL BODY | SEAT RADIUS | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM | SEATING SURFACE SHAPE | RADIAL |
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